rxjs：在我发送的第一组中获取重复的 http 请求

Question

我做了这个功能，每次迭代我有 7 个请求，每次 environment.dashboard.frequency 发送， 但一开始，我看到我向服务器发送了 14 个请求，而不是 7 个：

let requests: Observable<ResourceResponse>[] = initRequests(this.durationService.resourceDataDuration)
    timer(0, environment.dashboard.frequency)
      .pipe(
        takeUntil(this.destroy),
        startWith(0),
        switchMap(() => forkJoin(requests))
      )
      .subscribe((responsesArr: ResourceResponse[]) => {
        this.updateBegin()
        for (const response of responsesArr) {
          this.durationService.resourceDurationHandler.setPresentedDataRanges(
            response,
            this.durationService.resourceDataDuration,
            this.durationService.resourcePresnetedDataDurations
          )
          this.updateMany(response.Resource, response.Response, true)
        }
        this.updateEnd()
        requests = initRequests(this.durationService.resourceDataDuration)
      })

Answer 1

timer(0, environment.dashboard.frequency) -> dueTime = 0 -> 不需要 startWith